Ventilator for ships



(No Model.)

P. MIHAN.

VENTILATOR FOR SHIPS.

No. 269,533. Patented Dec. 26, 1882.

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PATENT PATRICK MIHAN, OF CHELSEA, MASSACHUSETTS.

VENTlLATOR FOR SHIPS.

SPECIFICATION forming part of Letters Patent No. 269,533, dated December 26, 1882.

Application filed April 14, 1882. (No model.) I

To all whom 'it may concern:

Be it known that I, PATRICK MIHAN, of Chelsea, in the county of Suffolk, of the State of IYIassachuset-ts, have invented a new and useful Improvement in Ventilators; and I do hereby declare the same to be described in the following specification and represented in the accompanying drawings, of which Figure 1 is a front elevation, and Fig. 2 a vertical and transverse section, of a ventilator containing my invention, the nature of which is deflnedin the claims hereinafter presented.

In carrying out my invention, I have combined with a ventilator-hood having a mouth an internal partition and two hinged deflectors, and means of eifecting the closing of the upper one of such deflectorswhen a sea may enter with force the mouth of the hood, the object of thus closing the upper deflector being to prevent the water from being drawn upward within the hood and over the top of the partition, and thence falling down through the hood or part thereof in rear of the partition.

In such drawings, A is the ventilator-hood, having on one side of item mouth,a, of a square or other suitable form, and also having within and across it the said hood, and in rear of and arranged, as represented, with the mouth, a partition, I).

In the hood are the two deflectors B and G, the lower one of them-via, that marked Ubeing hinged at its upper part to the lower part of the partition I). The upper deflector, B, is hinged to the said partition, nearits top. The lower deflector, when down or closed, inclines downward toward and rests upon the lower edge of the mouth a, and when raised upward to its highest position such deflector inclines upward toward and rests against the top of the said month.

Over the lower deflector are two movable rectangular plates, Dand E, which are hinged together and extend across the hood. They are arranged at an acute angle to the lower deflector, to which the lower of said plates, at its lower edge, is hinged. At its upper edge the upper of the said plates bears against the front side of the partition b. The said up- (1 d, projecting inward from opposite sides of the hood, and arranged as represented.

l per plate extends under and against two studs, 0

A rope or chain, c, is fixed to the upper part of the lower plate and extends upward and around guide-wheels f, g, and h, arranged within the hood in manner as represented, and is fastened to the upper deflector. From thislatterdeflectoran arm,i, extends, as shown,

and has attached to it, and to a stud, k, at the front of the hood, an elastic spring, I, which operates to pull forward the arm 1' and turn the upper deflector downward toward the partition.

In case of a sea entering the mouth of the ventilator when the deflector O is down, such sea will impinge against either or each of the plates D and E and force them downward, whereby the upper deflector-will, at the same time, be raised to an inclined or closing position, so as to serve as a barrier to prevent the Water from passingupward and over the top of the partition, and thence falling down through the hood. Immediately on the force of the sea becoming expended the upper deflector will be moved downward against the partition, and the two plates D and E will be drawn upward into one plane with each other by the retractivc power of the spring, the two studs d d operating to prevent the upper of the plates from being drawn up higher.

In raising the deflector U the upper of the plates D andE willbeborne against the studs, which will hold it down, while thelower plate moves upward with the said deflector. Thus it'will be seen that the addition of the two plates D and E does not prevent the raising of the lower deflector up to the top of the mouth a.

I would remark that I do not herein claim mouth, the partition, and the two movable defiectors, such having been the subject of or described in an application for a patentlately made by me.

What I claim as my invention is as follows:

1. The combination of the two plates D and E, hinged to each other and arranged, as dehood A, its partition I), and two deflectors B scribed, within the hoodA, and connected with and O, and the plates D and E, arranged and the upper deflector, B, by means as explained, I applied substantially as explained.

with such deflector and its operative spring, I PATRICK MIHAN. 5 and the partition b, arranged'in the hood, as fitnesses:

set forth. R. H. EDDY,

2. The combination of the studs d, with the i E. B. PRATT. 

